Mason Williams (shoulder) out for season

One of the Yankees’ top prospects, outfielder Mason Williams, had surgery to repair a torn left labrum on Friday and will miss the remainder of the 2012 season.

Williams, who was playing for Class-A Advanced Tampa, was injured while trying to make a diving catch on July 25th. The injury is to his non-throwing shoulder, and the 20-year-old phenom is expected to be ready to go for Spring Training 2013.

Prior to the injury, Williams was in the midst of a stellar season. He started 2012 at Low Class-A Charleston, hitting .304 with eight home runs, 28 RBI, 19 doubles and 19 steals for the RiverDogs and earning a South Atlantic League All-Star nod before his July 2 promotion to Tampa, where he posted a .277-3-7 line with three doubles and one steal in 22 games for the T-Yanks.

In corresponding roster moves, the Yankees organization has promoted OF Kelvin DeLeon (.240-4-34, 17 doubles in 319 PA at Charleston) to replace Williams in Tampa, and 1B/DH Saxon Butler, a 2012 draft pick who hit .296 with 10 homers and 36 RBI at Short-Season Class-A Staten Island, will be bumped up to the RiverDogs.